Is Ru catalyst (2nd or 3rd generation) used for ROMP of norbornene derivatives in DCM or MeOH solvents?

More Sabnam Kar's questions See All

Request for thesis Examiner. Mindfulness, resilience, and wellbeing related topic. Any one interested?

One of my scholars is about to complete a thesis on mindfulness, resilience, and wellbeing. This university requires thesis examiners from different parts of the globe. Should be an associate...

02 June 2024 860 1 View

Cell morphology changes in Invasion assay?

Hi all, I have been working on invasion assay but i have encountered a problem recently. I have attached image below (where one of them showed clear morphology while another are dispersed? Your...

10 January 2024 6,994 0 View

NK-92 Transduction?

Hi all, I will be working on NK92 and may I know if it is better to use retroviral or lentiviral vector if i would like to express a gene in the NK cell cell line? Thanks alot!

31 December 2023 3,276 1 View

How can i write DLL file in TRNSYS 17 after creating my component in proformas?

21 October 2023 3,659 0 View

How can I model regressional analysis for a new high volume fly ash concrete mix in MATLAB AND PYTHON ?

I need how to model and develop mix proportion of HVFAC concrete and regressional analysis also.

30 August 2023 8,246 1 View

How can I get TMY2 data file of a particular place to be able to use in TRNSYS?

That is the weather data of the place is not in my TRNSYS weather library.

12 August 2023 4,865 0 View

Does increased atmospheric humidity affect the hydrogel formation of gelatin methacrylate (GelMA) and silk methacrylate (SilMA) ?

My GelMA samples are not forming proper hydrogels. I used to obtain good hydrogels earlier and I did not change any components from my sample synthesis recipes. The only thing I doubt is that...

10 July 2023 9,144 2 View

Current issues in additive manufacturing?

How can current issues in both conventional and solid-state additive manufacturing processes? What are the various metallurgical solutions available for effectively eradicating interlayer defects...

11 April 2023 7,588 3 View

Trying to synthesize malonyl dichloride from malonic acid using POCl3 but no reaction is observed. What to do to help the reaction take place?

I'm trying to synthesize malonyl dichloride from malonic acid using POCl3 as the chlorinating agent. I'm adding dropwise the POCl3 at 0 Celsius degrees to the solid malonic acid and stirring the...

07 February 2023 7,447 1 View

Does anyone know about which stain to use for negatively charged dipeptide (MW< 1kD) to run in agarose gel?

We want to know the charge of a dipeptide (Mw < 1kD). Dipeptide is based on aspartic acid and its negatively charged. So, to prove that we have carried out 3% agarose gel experiment, tracking...

03 January 2023 5,649 10 View

What is the solvent for 8YSZ nano material?

I need to do some experiment with it in liquid form.

07 August 2024 613 3 View

Need heterogeneous catalysts calcined before reduction?

Metal-containing heterogeneous catalysts often need to be calcined before reduction, so what are some examples of catalysts that perform better without calcination? What is the reason and how many...

05 August 2024 909 2 View

Which solvent is better to dissolve with secondary metabolites extracted from fungi?

I work on MCF7 cell cell for anticaner purpose and I wa to do drug preperation the drug ( secondary metabolites extracted from Aspergillus) My question which solvent is better with these secodary...

03 August 2024 4,725 2 View

I need to dissolve stigmasterol for an animal experiment, it hasn't dissolved in either DMSO or vegetable oil. Can anyone recommend the best solvent?

Hello everyone, I need to dissolve stigmasterol for an animal experiment, but it hasn't dissolved in either DMSO or vegetable oil. Can anyone recommend the best solvent for stigmasterol?

01 August 2024 7,504 2 View

I have calcined my catalysts without flowing air from the compressed air cylinder will there be any problem with my reaction if i use that catalysts?

FYI Catalyst is MFI zeolite Si/Al = 140,25.40.11.5,15 I am using this catalyst to study methanol to DME conversion

25 July 2024 2,486 2 View

Why methanol and sulphuric acid used in the analysis of polyhydroxyalkanoates (PHA) by GC-MS?

Why methanol and sulphuric acid, used in the analysis of polyhydroxyalkanoates (PHA) methyl esters by GC-MS? Additionally, why do we typically use non-polar solvents in GC-MS?

22 July 2024 1,210 2 View

When making abraxane with Nab tech, why is 9:1 Chloroform&EtOH used as solvents?

Is it the best optimization ratio based on experiments?

22 July 2024 8,170 0 View

What is the solvent system required to run tlc for calixarenes?

If you don't understand my question let me know

21 July 2024 563 1 View

Convergence of absorbency values to determine the total phenolic content of several solvents?

I used several solvents and measured the absorbency and determined the total phenolic content, but the results were similar after dropping them on the titration curve; What is the reason, please help

17 July 2024 5,151 5 View

How Can I Resolve a Persistent Unwanted NMR Peak at 1.25 ppm?

Hello everyone, I am facing a consistent issue in my NMR spectra with an unwanted peak appearing at 1.25 ppm. This peak seems to vary with the amount of sample: it becomes more pronounced with...

15 July 2024 9,065 4 View

Frank T. Edelmann

Dear Sabnam Kar thank you for your interesting technical question. Please have a look at the following relevant reference which might help you in your analysis:

Supported Catalysts Useful in Ring-Closing Metathesis, Cross Metathesis, and Ring-Opening Metathesis Polymerization

Article Supported Catalysts Useful in Ring-Closing Metathesis, Cross...

this article is freely available as public full text on ResearchGate.

Sabnam Kar

Frank T. Edelmann Thank you Sir for sharing the reference. Reference is really helpful.